MCQ
Which of the following does not exist ?
- A$\ce{BiCl_5}$
- B$\ce{XeH_4}$
- C$\ce{BiF_5}$
- ✓Both $(A)$ and $(B)$
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$\mathop {{H_3}C\mathop C\limits^ \ominus {H_2}}\limits_{(i)} \,,$$\mathop {{H_2}C = \mathop C\limits^ \ominus H}\limits_{(ii)} $ and $\mathop {H - C \equiv \mathop C\limits^ \ominus }\limits_{(iii)} $
is in the order of


$A$. $\mathrm{Ar}$ $B$. $\mathrm{Br}$ $C. F$ $D$. $\mathrm{S}$
Choose the most appropriate from the options given below:
$\mathop {Al}\limits_{metal} \xrightarrow[{(aq.)}]{{HCl}}'X' + Gas\,'P'$
$\mathop {Al}\limits_{metal} \xrightarrow[{ + {H_2}O}]{{NaOH\,(aq.)}}'Y' + Gas\,'Q'$